| 摘要 |
<p>Batch mixing takes place in the gap (3) between grooved faces of counter-rotating discs (1, 2) such that the spiral grooves (8) and lands (10) of each face traverse the grooves (8) and lands (10) of the other, to shear and split material drawn inwardly along the grooves (8) for distributive mixing. Modifications include plural-turn spiral, straight, and truncated spiral grooving (Figures 5 to 10), and batch mixing in which only one disc (28) rotates (Figure 11). Continuous mixing involving shear is carried out within a cylindrical barrel (40 Figure 12; 57 Figure 13) between its internal helical-grooving (43; 59) and the helical grooving (44; 60), of opposite hand, of a rotor (41; 58). The shearing can produce mechanochemical reactions that break down the molecular structure of the material, notably in the context of mastication and solubilising of used rubber in reclaim from vehicle-tyres.</p> |
